StringPrimaryBNF (EclipseLink 3.0.3-RC1, API Reference)

java.lang.Object
- org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF
- - org.eclipse.persistence.jpa.jpql.parser.StringPrimaryBNF

```
public final class StringPrimaryBNF
extends JPQLQueryBNF
```
The query BNF for a string primary expression.
JPA 1.0:
BNF: string_primary ::= state_field_path_expression | string_literal | input_parameter | functions_returning_strings | aggregate_expression

JPA 2.0:
BNF: string_primary ::= state_field_path_expression | string_literal | input_parameter | functions_returning_strings | aggregate_expression | case_expression

JPA 2.1: string_primary becomes string_expression
BNF: string_primary ::= state_field_path_expression | string_literal | input_parameter | functions_returning_strings | aggregate_expression | case_expression | function_invocation | (subquery)

Version:

2.5

Author:

Pascal Filion

Since:

2.3

Field Summary

Fields
Modifier and Type Field Description

static String ID
The unique identifier of this BNF rule.

Constructor Summary

Constructors
Constructor Description

StringPrimaryBNF()
Creates a new StringPrimaryBNF.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`initialize()`	Initializes this BNF by registering child `JPQLQueryBNFs` and `ExpressionFactories`.

Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF
children, getExpressionFactory, getExpressionFactoryIds, getExpressionRegistry, getFallbackBNFId, getFallbackExpressionFactoryId, getId, getIdentifiers, handleAggregate, handleCollection, handlesNestedArray, handleSubExpression, hasChild, hasIdentifier, isCompound, nonCompoundChildren, registerChild, registerExpressionFactory, setCompound, setFallbackBNFId, setFallbackExpressionFactoryId, setHandleAggregate, setHandleCollection, setHandleNestedArray, setHandleSubExpression, toString, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - ID
```
public static final String ID
```
    The unique identifier of this BNF rule.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - StringPrimaryBNF
```
public StringPrimaryBNF()
```
    Creates a new StringPrimaryBNF.
- Method Detail
  - initialize
```
protected void initialize()
```
    Description copied from class: JPQLQueryBNF
    
    Initializes this BNF by registering child JPQLQueryBNFs and ExpressionFactories.
    
    Overrides:
    
    initialize in class JPQLQueryBNF